# name : R arsenal tableby function
# key : arsenal.tableby.function
# key : tableby@arsenal.function
# contributor: Shuguang
# expand-env: ((yas-wrap-around-region 'nil))
# --
${1:tb_summary} <- tableby(${2:group} ~ ${3:x + y},
                   data = ${4:dt},
                   strata = ${5:factor},
                   control = $1)